Wren's Run Vanquisher is a rare Creature — Elf Warrior card from Friday Night Magic 2009 (F09), collector number 5. Current market price: — (foil $2.12), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, reveal an Elf card from your hand or pay {3}. Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)